As plantas daninhas presentes no trigo competem por diversos fatores exercendo impacto negativo na produtividade da cultura. Nesse contexto, o objetivo do estudo foi analisar morfologicamente o trigo e o azevém, em resposta ao estresse causado pela competição. Conduziu-seexperimentosem delineamento completamente casualizado, com 4 repetições, sendo osérie de substituição com população de 64 plantas por vaso. Os tratamentos constaram de proporções de plantas detrigo e azevém. As proporções testadas foram: 100/0 (estande puro de trigo), 75/25, 50/50, 25/75 e 100/0% (estande puro de azevém). A cultivar de trigo Fundacep Horizonte apresentouhabilidade competitiva superior ao azevém;a competição intraespecífica foi mais prejudicial ao trigo, enquanto que, a interespecífica causou maior prejuízopara o azevém.
The weeds present in wheat compete for several factors negatively impacting on crop productivity. In this context, the goal of the study was tomorphologically analyze wheat and ryegrass in response to stress caused by competition between crop and weed. The experiment was conducted in completely randomized design with 4 replications in a replacement series with a population of 64 plants per pot. Treatments consisted of plant proportions of ryegrass and wheat. The proportions were tested: 100/0 (pure standof wheat), 75/25, 50/50, 25/75 and 100/0% (pure stand ofryegrass). According to the results, it was observed that wheat Fundacep Horizonte has higher than ryegrass competitive ability; intraspecific competition was more damaging to wheat, whereas interspecific was more damaging to the ryegrass.
